Lachesis.. Im sorry but your friends Naja annulifera are an exeption. Snouties are not by any means a good starter cobra as they get big and can be a handfull. If i had the choice of handling a cobra that hoods or a cobra that doesnt hood, I would choose the one that hoods every single time. Easier to predict what they are going to do, also their maneuverability is lower when thay are hooded.
Forest cobra...are. you. mad! Forest cobras are some of the largest cobras in the southern african region, also some of the fastest. Their large size means that they have a long strike range and a high venom yield. The forest cobra that I work with is the only venemous snake that I am properly scared of. I respect our black mabas greatly for their ability to kill but that forest takes the cake. Almost three metres of muscle, aggression and venom.
In my opinion keeping venemous is like starting back at square one. When you get your first snake its usually something non venemous and easy to manage. You dont go out and buy emerald tree boas and retics for your first snakes. Now with the venemous its a similar situation. Start at square one and work your experience up to what you want to get.
You see Rolands Ppic, with his texas rat. That is the ideal situation. Something big, non venemous and aggressive that you can sharpen your skills with.
Just my 2c
Good luck